cc: Remove support for disabling non-root render surfaces.

cc/trees/clip_node.h

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CC_TREES_CLIP_NODE_H_
 #define CC_TREES_CLIP_NODE_H_
 
 #include <memory>
 
 #include "cc/base/cc_export.h"
@@ skipping 74 matching lines @@
   // different target. Target information shall be removed from here.
   int target_effect_id;
 
   // When true, |clip_in_target_space| does not include clips from ancestor
   // nodes.
   bool layer_clipping_uses_only_local_clip : 1;
 
   // True if layers with this clip tree node need to be drawn with a clip
   // applied.
   bool layers_are_clipped : 1;
-  bool layers_are_clipped_when_surfaces_disabled : 1;
 
   // Nodes that correspond to unclipped surfaces disregard ancestor clips.
   bool resets_clip : 1;
 
   bool operator==(const ClipNode& other) const;
 
   void AsValueInto(base::trace_event::TracedValue* value) const;
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_CLIP_NODE_H_